Santosh Ostwal这十几年来都为一个费解的难题而困扰：如何让印度的农民更方便地灌溉作物。
For decades Santosh Ostwal obsessed over an obscure problem: how to make it easier for Indian farmers to water their crops.
我国生产一种结构简单使用方便的测水笔，已在近几年水稻控制节水灌溉中应用。
A surveying water pen of simple structure and convenient usage is made in our country that is applied in rice control and water saving irrigation for several years.
为了方便农田灌溉，我们修了条明渠。
In order to make irrigation convenient, we have built an open ditch.
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